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UPD (UPDATE) OPTION
The UPD option specifies that a new version of RBM has
been made but none of the areas on the system disk need
increase in size. This option can alsobe used when changes
are made in any of the following phase 1 input parameters:
•
Public Library (PL) FWA
•
Resident Foreground FWA
•
Nonresident Foreground FWA
•
Sac kg round FW A
UPD may not be used if any of the disk areas must change in
either size or location.
Note that a change in the back-
ground FWA to increase the total size of background might
require a change in size of the checkpoint area, which
could necessitate a complete new SYSGEN. In this case,
a CP AREA TOO SMALL alarm would be output for the
user's information.
Phase 2 reads the bootstrap to determine where the old ver-
sion of the RBM is located on the disk, reads the Monitor
Constant Table, and compares the old load addresses against
the new load addresses to determine which files on the disk
must be reloaded.
The size of the new Master Dictionary must be at least as
large as the old Master Dictionary.
If it is not, an error
message will be output and phase 2 wi II continue. As the
comparison checks are made, a subsetofthe following mess-
ages will be issued on the keyboard/printer:
RELOAD
PUB. LIB.
RES. FGD.
NONRES. FGD.
BCKG.
MSR/PL USERS AND PL
NOTHING
If any of the following modules are relocated on the disk,
the contents of other affected areas must be reloaded:
Relocated Module
Public library required
reloading because its
load address has
changed.
Resident or nonresident
foreground was relocated.
Background was
relocated.
Required Reloading
All programs that reference
the Public Library must also
be reloaded.
None of the
Public library, and no sys-
tem processors would have to
be reloaded.
The appropriate routines must
be reloaded in these areas.
All system processor and back-
ground user programs must be
reloaded.
(See Chapter 5. )
Relocated Module
TVECT Table load ad-
dress has changed. t
Required Re loading
All programs referencing Moni-
tor service routines (MSR) or
the Public Library (PL) through
the TVECT Table via an ex-
ternal reference must be
relocated.
After these checks are made, phase 2 outputs the message
LOAD NONRESIDENT MODULES
and enters the wait state.
When the wait is cleared,
phase 2 proceeds to load the overlays as described earlier
for the ALL option, but with the following additional
considerations.
After the overlays are loaded, check is made to see if the
new version of RBM exceeds the disk space allocated to
the old version.
If so, all programs in the System Processor
area must be reloaded.
(Reloading of the System Processor
area is necessary because RBM is the first file in the area.)
If a reload is necessary, the following message is output:
RELOAD
SP AREA
After the necessary RELOAD alarms are output for the user's
information, the Master Dictionary is read from the di sk
version of RBM and stored into its allocated area in the
new version of RBM in memory.
The new version of RBM
will then be written onto the RBM
fj
Ie, followed by an
updated bootstrap in the BOOT fi Ie and on the foreground
BO device (if one was assigned).
Finally, the Transfer
Vector Table and the RBM Symbol Table will be updated
and then rewritten on the disk.
SYSTEM LOAD PHASE ERROR MESSAGES
In addition to the RELOAD messages listed previously and
those concerned with loading the overlays, the messages
given in Table 15 can be generated and are unique to
phase 2.
t
.
•
The TYECT load address Will change any time the first
word address of the area adjacent to RBM in core has
changed.
Definition-Phase Operation
41
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